A5043677566- Scientific Computing and Data Management
- Animal Behavior and Reproduction
- Distributed and Parallel Computing Systems
- Wildlife Ecology and Conservation
- Plant and animal studies
- Research Data Management Practices
- Species Distribution and Climate Change
- Ecology and Vegetation Dynamics Studies
- Fault Detection and Control Systems
- Genomics and Phylogenetic Studies
- Geochemistry and Geologic Mapping
- Morphological variations and asymmetry
- Amphibian and Reptile Biology
- HIV/AIDS Impact and Responses
- Bat Biology and Ecology Studies
- Geophysics and Gravity Measurements
- Economic and Environmental Valuation
- Legal Issues in South Africa
- Genetic diversity and population structure
- Land Use and Ecosystem Services
- Cloud Computing and Resource Management
- Evolution and Paleontology Studies
- Regional Economic and Spatial Analysis
- Forest Management and Policy
- Advanced Data Storage Technologies
University of Oxford
2012-2019
University of Reading
2005-2007
Rhodes University
2001
University of the Witwatersrand
1992-1999
Institute of Zoology
1986
There is a concerted global effort to digitize biodiversity occurrence data from herbarium and museum collections that together offer an unparalleled archive of life on Earth over the past few centuries. The Global Biodiversity Information Facility provides largest single gateway these data. Since 2004 it has provided point access specimen databases biological surveys collections. Biologists now have rapid more than 120 million observations, for use in many analyses. We investigate quality...
Abstract. We present a correlative modelling technique that uses locality records (associated with species presence) and set of predictor variables to produce statistically justifiable probability response surface for target species. The indicates the suitability each grid cell in map terms suite variables. constructs hyperspace using principal component axes derived from components analysis performed on training dataset. dataset comprises values associated localities where has been recorded...
Abstract A detailed study was made of the natural calling behaviour male painted reed frogs in wild. Comprehensive minute by records vocal activity males simultaneously breeding chorus were generated over a 19‐night period using multi‐channel event recorder. With few exceptions, which called either spanned or extended beyond time window when females sought mates chorus. Males varied little persistence and majority produced advertisement calls during each period. Aggressive interactions...
The local ecological footprinting tool (LEFT) uses globally available databases, modeling, and algorithms to remotely assess locally important features across landscapes based on five criteria: biodiversity (beta‐diversity), vulnerability (threatened species), fragmentation, connectivity, resilience. This approach can be applied terrestrial at a 300‐m resolution within given target area. Input is minimal (latitude longitude) output computer‐generated report series of maps that both...
In the Biodiversity World (BDW) project we have created a flexible and extensible Web services-based grid environment for biodiversity researchers to solve problems in analyse patterns. this environment, heterogeneous globally distributed biodiversity-related resources such as data sets analytical tools are made available be accessed assembled by users into workflows perform complex scientific experiments. One experiment is bioclimatic modelling of geographical distribution individual...
In the biodiversity world (BDW) project we have created a flexible and extensible Web services-based grid environment for researchers to solve problems in analyse patterns. this environment, heterogeneous globally distributed biodiversity-related resources such as data sets analytical tools are made available be accessed assembled by users into workflows perform complex scientific experiments. One experiment is bioclimatic modelling of geographical distribution individual species using...
The NIST definition of cloud computing has been accepted by the majority community as best available description to fully capture variety factors which determine how different stakeholders create, use or interact with computing. With breadth landscape there is a need being expressed from within activities consider it may be segmented so that diversity might more easily understood stakeholders. considers four deployment models (Private, Public, Hybrid, Community Cloud), three service (IaaS,...
To test the relative importance of female choice, sneak copulation and male dominance as determinants mating success in a feral guppy population, we conducted paired-male experiment using colour patterns progeny to score paternity. Sneak male-male aggression had no noticeable effect on success. Mating was strongly related frequency behavioural responses both displaying non-displaying males. Relative area orange colouration complexity were positively This substantiates observed preference for...
As the Industrial Internet of Things (IIoT a ) grows, systems are increasingly being monitored by arrays sensors returning time-series data at ever-increasing 'volume, velocity and variety' b (i.e.Industrial Big Data c ).An obvious use for these is real-time condition monitoring prognostic time to failure analysis (remaining useful life, RUL).(e.g.See white papers Senseye.io,Prognostics -The Future Condition Monitoring d , output NASA Prognostics Center Excellence (PCoE e ).)However, as...
Female guppies from a feral South African population respond sexually to more orange males in correlative trials. We impaired the female's ability use elements of male colour patterns by conducting choice trials under light. Under light, there was no relationship between pattern and female sexual response, but white blue light treatments such relationship. Other ornaments were not preferred females either normal lighting conditions or when their as cue impaired. The implications for...
In the Biodiversity World (BDW) project we have created a flexible and extensible Web Services‐based Grid environment for biodiversity researchers to solve problems in analyse patterns. this environment, heterogeneous globally distributed biodiversity‐related resources such as data sets analytical tools are made available be accessed assembled by users into workflows perform complex scientific experiments. One experiment is bioclimatic modelling of geographical distribution individual...
A method for quantifiably estimating the deforestation risk exposure of agricultural Forest Risk Commodities in commercial supply chains is presented. The model consists a series equations applied using end-to-end data representing quantitative descriptors chain and its effect on deforestation. robust penalty included historical corresponding reward reductions rate INternational FOrest Model (INFORM) analysis that answers particular question any Commodity chain: what cumulative exposure? To...